Antique French 18K gold moonstone signet ring

For sale a beautiful 19th-century 18K gold signet ring, featuring a captivating oval shaped moonstone as center piece. 

A signet ring, traditionally used as a personal seal, has long been a symbol of status and identity. The moonstone in this ring is showcases a special blue sheen — known as adularescence— which shimmers as the ring moves. This magical effect is due to the stone's unique internal crystal structure, which scatters light and creates a soft, ethereal glow. Please be aware and as shown on the photos, that the strength of the visual effect of the blue sheen depends largely on the lighting, the contrast and the movement of the stone. It may show clearer or stronger effects from different angles.

The gold signet ring itself is crafted from 18K gold, adding to its luxurious appeal. It is stamped with the French eagle’s head hallmark on the shank.

Its minimal and classic design ensures it remains a versatile and timeless piece, perfect for daily wear. Whether you’re adding to a collection of antique gold rings or looking for a distinctive piece that never goes out of style, this 18K gold signet ring is an heirloom-quality treasure that embodies both history and beauty.

The ring is resizable at buyer’s cost, please contact us before passing your order.

The boxes on the photos are for display only.

Measurements and Condition

In overall good antique condition with light traces of use and oxidation. Natural inclusions. Slight scratches on the surface of the moonstone.

French eagle’s head hallmark for 18K gold on the shank.

Resizable with a current size of EU/FR  53 – US 6 ½ – UK M

The moonstone measures: 10mm*8mm

Weight: 5.9g